James h



(N0 Model) J. H. BLESSING.

GHEGK VALVE.

Patented Dec. 18, 1883.

Invenior:

J. HQ BLESS/N6,

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JAMES H. BLESSING, OF ALBANY, NENV YORK.

CHECK- VALVE.

SPECIFICATION forming part of Letters Patent No. 290,314, dated December18, 1883.

Application filed July 5, 1683. (No model.)

To aZZ whom it may concern Be it known that I, JAMES H. BLEssING, of thecity and county of Albany, and State of New York, have invented certainnew and useful Improvements in Check -Valves, of which the following isa specification.

My invention relates to improvements in straight-way check-valves havingtheir valveseats fixed in an angular position in respect to the line ofdischarge of the liquids therethrongh; and the object of my improvementsis to afford facilities for removing the inner parts of said valve fromthe valve-casing, for renewal or repairs,without removing said casingfrom its place in a-line of pipes. This object I attain by means of theconstruction illustrated in the accompanying drawings,

which form part of this specification, and in which--- Figure l is aside elevation of a check-valve containing my improvements,- Fig. 2, al0ngitudinal section of the same; Fig. 3, a transverse section throughthe angular line a: w on Fig. 2; Fig. 4, a front elevation of the yokefor securing the removable valve-seat in place, and Fig. 5 a perspectiveview of the under side of the removable valve-seat.

As represented in the drawings, A is the valve-casing, preferably madein the ordinary .globe form, and provided with induction branchcueduction branch a, and top branch, (1, the latter being provided forthe purpose of obtaining access to the inner parts of the device. Thebody of said casing is also provided with an inclined partition ordiaphragm, B, which separates the induction from the eduction openings.The said diaphragm is provided with an opening, I), and an annulartongue, I), which is made concentric to said opening.

O is a removable valve-seat, provided with an opening, c-which coincideswith the opening 1) through the diaphragm B-and an annular groove, 0,adapted to fit upon the tongue b. An elastic packing, c fixed in thegroove 0', forms a water-tight joint With the tongue I). The saidremovable seat and the mode of forming the joint between it and thediaphragm constitute a separate invention, and will be found fullyillustrated and described in Letters Patent of the United States N 0.

272,634, granted to me on the 20th day of February, 1883.

D is a U-shaped yoke, the ends of whose limbs bear upon the face of thevalve-seat O at opposite points on said seat. The crown of said yoke isadapted to receive the pressure of a tap-bolt or binding-screw, E, whichis inserted in the casing A at a point that is opposite, or nearly so,to the center of the valveseat 0, as shown in Fig. 2. The saidbindingscrew has on its inner end a spur, e, which engages in a hole, d,in the crown of the yoke D, and confines the latter in place.

F is the valve, made in the ordinary clackvalve form, and arranged toswing on a pin, f, which passes through a sleeve, f, formed on the upperedge of said valve, and is retained in place by means of the screw-plugfThe said valve is constructed and arranged in relation to the yoke D insuch manner that it will swing freely between the two limbs of saidyoke.

G is a bonnet or cap fitted to screw into the top branch, a of thevalve-casing, so as to close the opening therethrough.

The parts should be made substantially in the forms shown and described,and preferably so that like parts for the same-sized valves will beperfectly interchangeable.

The mode of assembling the several parts to complete an operative deviceis as follows: The valve-seat 0, containing the elastic packing 0 isfirst fixed in place on thetongue bin the valve-casing A. The yoke D isthen inserted in the casing in such manner that the ends of its twolimbs will bear upon the face of the valve-seat O, and so that the hole(I will range in position to receive the spur e. The binding-screw E isthen screwed down to press the valve-seat O with sufficient forceagainst the elastic packing a to produce a watertight joint at thatpoint. The valve F is then inserted into the casing A through theopening in the top branch, cf, the pivot-pin f is inserted in the sleevef and bosses a and the plug f 2 is screwed down to secure the valve F inposition. The bonnet G is then screwed down to its place, and thecheck-valve is completed, ready to be put into use.

By removing the bonnet G, tap-bolt E, and diaphragm, ofthe yoke D andbinding-screw plugf, the valve F and valve-seat C may be E,arranged asdescribed,and adapted to secure removed from the casim A,for the purposeof the valve-seat O in place, as herein specified. examination orrepairs, without displacing 2. The colnbinationgvitharemovable Valve- 5said casing from a line of pipe. seat, 0, of the yoke D andbinding-screw E, 15

I claim as my invention as and for the purpose specified.

1. In a straight-way checkwalve, the com- J AMES H. BLESSING. bination,with a valve-casing, A, having an \Titnesses: inclined diaphragm, B, asherein described, \VILLIAM H. LOW,

10 and a removable valve-seat, C, fixed on said I S. B. BREWER.

